Spectacle Frame for Protective Shield

ABSTRACT

A spectacle frame comprises a main frame composed of two rims and a bridge, and two temples. The bridge is connected between the two rims. One end of each temple is rotatably connected with an outward portion of a respective rim via a hinge. The spectacle frame is designed to have a predetermined first parameter, a predetermined second parameter, a predetermined third parameter, and a predetermined fourth parameter, whereby the spectacle frame has a size smaller than general glasses to facilitate a person engaging a special task to wear a protective shield and prevent the protective shield from being interfered with, and can perfectly fit various facial profiles of persons so as to keep the protective shield airtight.

TECHNICAL FIELD OF THE INVENTION

The present invention relates to a spectacle frame and, more particularly, to a spectacle frame for persons engaging in special tasks to facilitate the wearing of protective shields.

DESCRIPTION OF THE PRIOR ART

Generally, a spectacle frame is provided with two hinge portions each mounted at an outward portion of a rim for rotatably mounting a temple such that each temple can be rotated to a folded or unfolded position. However, such spectacle frame has relatively large structure of rims and thus cannot perfectly fit a user's face. Thus, shortsighted persons engaging in special tasks, such as fire fighting or mine works, required for wearing protective shields, should fix their glasses before wearing protective shields to prevent the glasses from movement. Even more, the glasses may interfere with the wearing of a protective shield. Therefore, some persons may select to wear contact lenses. However, not everyone is suitable to wear contact lenses. In special tasks, such as fire fighting or disaster relieves, the conventional glasses may interfere with an operation, there is a requirement to design an improved spectacle frame in cooperation with protective shields for those engaging in special tasks.

SUMMARY OF THE INVENTION

The primary object of the invention is to provide a spectacle frame for use with a protective shield. The spectacle frame can perfectly fit a person engaging in a special task required for wearing a protective shield, in which the spectacle frame fits various facial profiles and does not interfere with the protective shield so as to keep the protective shield airtight.

To achieve the object of the invention, an improved spectacle frame is disclosed, which generally comprises a main frame composed of two rims and a bridge, and two temples, wherein the bridge is connected between the two rims, one end of each temple is rotatably connected with an outward portion of a respective rim via a hinge. The spectacle frame is designed to have a predetermined first parameter; a predetermined second parameter, a predetermined third parameter, and a predetermined fourth parameter, wherein the first parameter is defined as the distance between the two hinges to allow the spectacle frame to snugly fit on a user's face, the second parameter is defined as the distance between the bridge and a front portion of either of the temples in unfolded state adjacent to a respective hinge along a direction perpendicular to the main frame, the third parameter is defined as the length of a middle portion following the front portion of either of the temples in unfolded state, and the fourth parameter is defined as the angle between the main frame and either of the temples in unfolded state.

Furthermore, The predetermined first parameter is about from 112 to 122 mm, the predetermined second parameter is about from 38 to 48 mm, the predetermined third parameter is greater than 30 mm, the predetermined fourth parameter is about from 68 to 80 degrees, and each temple has a thickness less than 0.4 mm at the middle portion where the third parameter is defined.

The present invention can bring several beneficial effects: the spectacle frame has a smaller size to facilitate a user in wearing a protective shield and prevent the protective shield from being interfered with; the spectacle frame can perfectly fit various facial profiles to keep the protective shield airtight.

Other objects, advantages, and novel features of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a 3-dimensional view showing a spectacle frame for use with a protective shield according to the present invention.

FIG. 2 is a bottom view showing various featured parameters of the spectacle frame according to the present invention.

FIG. 3 is a schematic view showing a user wears the spectacle frame of the present invention.

FIG. 4 is another schematic view showing a user wears the spectacle frame of the present invention in cooperation with a protective shield.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Detailed description for the invention will proceed in the following paragraphs with accompanying drawings.

FIGS. 1 and 2 respectively show a 3-dimensional view and a schematic view showing the various featured parameters of a spectacle frame according to the present invention. As shown, the spectacle frame 1 generally comprises a main frame composed of two rims 10 and a bridge 12, and two temples 14, wherein the bridge 10 is connected between the two rims 10, one end of each temple 14 is rotatably connected with an outward portion of a respective rim 10 via a hinge 102. The spectacle frame 1 is designed and featured to have a predetermined first parameter, a predetermined second parameter, a predetermined third parameter, and a predetermined fourth parameter, wherein the first parameter is defined as the distance between the two hinges 102 to allow the spectacle frame to be snugly fitted on a user's face, the second parameter is defined as the distance between the bridge 10 and a front portion of either of the temples 14 in unfolded state adjacent to the hinges 102 along a direction particular to the main frame, the third parameter is defined as the length of a middle portion following the front portion of either of the temples 14 in unfolded state, and the fourth parameter is defined as the angle between the main frame and either of the temples 14 in unfolded state.

As shown in FIG. 2, the predetermined first parameter, indicated at numeral 2, is about from 112 to 122 mm; the predetermined second parameter, indicated at numeral 3, is about from 38 to 48 mm; the predetermined third parameter, indicated at numeral 4, is greater than 30 mm; the predetermined fourth parameter 4, indicated at numeral 5, is about from 68 to 80 degrees; either of the temples 14 has a thickness less than 0.4 mm at the middle portion where the third parameter is defined.

FIGS. 3 and 4 are schematic views showing an exemplary application of the present invention. Based on the determined first, second, third, and fourth parameters of the present invention, the spectacle frame 1 can perfectly fit a user, wherein the determined first parameter allows the spectacle frame 1 to snugly fit on two sides of the face of a user, the determined second parameter allows the spectacle frame 1 to closely fit on the face of a user, the predetermined third parameter with a temple thickness less than 0.4 mm allows the temples 14 of the spectacle frame 1 to snugly contact with two sides of the face of a user, the predetermined fourth parameter prevents the spectacle frame from being oversized or undersized when wearing the spectacle frame.

As shown in FIG. 4, after the spectacle frame 1 has been worn, a protective shield 7 can be worn in cooperation with the spectacle frame to perform a special task. The spectacle 1 will not interfere with the protective shield 7.

Although the present invention has been described with a certain degree of particularity, it is understood that the present disclosure is made by way of example only and the combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention hereinafter claimed. 

1. A spectacle frame for use with a protective shield, said spectacle comprising a main frame composed of two rims and a bridge, and two temples, said bridge connected between said two rims, one end of each temple connected with an outward portion of a respective rim via a hinge, said spectacle frame being characterized in that: said spectacle frame is designed to have a predetermined first parameter, a predetermined second dimension, a predetermined third dimension, and a predetermined fourth dimension, wherein the first parameter is defined as the distance between said two hinges to allow the spectacle frame to be snugly fitted on a user's face, the second parameter is defined as the distance between said bridge and a front portion of either of said temples in unfolded state adjacent to a respective hinge along a direction perpendicular to the main frame, the third parameter is defined as the length of a middle portion following the front portion of either of said temples in unfolded state, and the fourth parameter is defined as the angle between the main frame and either of said temples in unfolded state.
 2. A spectacle frame for use with a protective shield as claimed in claim 1, wherein the determined first parameter is about from 112 to 122 mm.
 3. A spectacle frame for use with a protective shield as claimed in claim 1, wherein the determined second parameter is about from 38 to 48 mm.
 4. A spectacle frame for use with a protective shield as claimed in claim 1, wherein the determined third parameter is greater than 30 mm.
 5. A spectacle frame for use with a protective shield as claimed in claim 1, wherein the determined fourth parameter is about from 68 to 80 degrees.
 6. A spectacle frame for use with a protective shield as claimed in claim 1, wherein either of said temples has a thickness less than 0.4 mm at the middle portion where the third dimension is defined. 